Credit: AP (File)

BOSTON — Federal prosecutors will seek the death penalty for a second time against a man who admitted killing three people in Massachusetts and New Hampshire during a weeklong crime spree.

Gary Lee Sampson, a drifter from eastern Massachusetts, pleaded guilty to federal charges and was sentenced to death by a jury in the July 2001 slayings of two men in Massachusetts who had picked him up hitchhiking. He also pleaded guilty to separate state charges for killing a man in New Hampshire.